Traditional 4 bit computers are by now obsolete while recent quantum computers are 4 bit but also.
4 bit processor means.
4 bit or 8 bit or 32 or 64 bit processor means the size of the integer registers not accounting for simd and the alu.
Some of the first microprocessors had a 4 bit word length and were developed around 1970.
You can do calculations with bigger values then no longer in one instruction.
This allows for greater memory usage because with 32 bit processors only 2 32 addresses of ram can be accessed all 32 digit binary numbers.
A 64 bit processor can handle 64 bits of data at once which allows it to compute information faster regardless of the processor s clock speed.
64 bit computer architecture provides higher.
Also 4 bit cpu and alu architectures are those that are based on registers address buses or data buses of that size.
It can come in dual core quad core six core and eight core versions for home computing you can think that a core is a cpu.
This means that a 32 bit processor such as the 486 class chips reads and writes memory 32 bits at a time.
Because standard 72 pin simms single inline memory modules are only 32 bits wide they must be installed one at a time in most 486.
In the 4 bit microprocessor or computer architecture will have a data path width or a highest operand width of 4 bits or a nibble.
Think of cores in a computer as if they are lanes of traffic.
And also these architectures or microprocessors typically will have a matching register file with registers width of 4 bits and 4 8 bit wide addresses.
Commented oct 30 2016 prashant.
A 64 bit processor is a microprocessor with a word size of 64 bits a requirement for memory and data intensive applications such as computer aided design cad applications database management systems technical and scientific applications and high performance servers.
Pentium class processors including the pentium iii and celeron read and write memory 64 bits at a time.
Shiva n bit processor means world length of processor means number of bits process at a time by cpu.
A 64 bit processor can support up to a theoretical.
If its a 4 core processor at 1 4 ghz then it means you have 4 lanes that can carry traffic at 1 4ghz per lane.
64 bit processors support 64 number of bits 8 octans data buses and address wide.
Single core at 3 ghz means that you have 1 lane that traffic programs can use to operate at 3 ghz speed.
With 4 bit registers you can only easily handle values that have 16 possibilities and it s very restrictive.
For software 64 bit means code to use with 64 bit virtual memory addresses.
A group of four bits is also called a nibble and has 24 16 possible values.